#include <stdio.h>
int main()
{
    int n, m;
    double t = 0.0;
    double sum = 0.0;
    double h = 0.0;
    scanf("%d %d", &n, &m);

  if (m ==1)
    {
        sum = 1.0 * n;
        h = 1.0 /4 * n;
    }
else
  {
      h = 1/4.00*n; sum = n * 1.00; t = n;
        for (int i = 1; i <m; i++)
        {

            t /= 4.00;
            sum += 2.00*t;
            h /= 4.00;

        }
    }
    printf("%.2f\n", sum);
    printf("%.2f\n", h);
    return 0;
}
